Browse other questions tagged sql ruby-on-rails cucumber bdd or ask your own question. Because the acquisition of locks is deferred until they are needed, it is possible that another thread or process could create a separate transaction and write to the database after the more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed This is my SessionController: class SessionsController < ApplicationController def create user = User.from_omniauth(env['omniauth.auth']) session[:user_id] = user.id redirect_to root_url, notice: "Signed in!" end This is my user model: class User < ActiveRecord::Base Check This Out
An application can tell which course of action SQLite took by using the sqlite3_get_autocommit() C-language interface. Because of this, Active Record emulates nested transactions by using savepoints on MySQL and PostgreSQL. Source: show | on GitHub # File activerecord/lib/active_record/transactions.rb, line 243 def after_update_commit(*args, &block) set_options_for_callbacks!(args, on: :update) set_callback(:commit, :after, *args, &block) end raise_in_transactional_callbacks() Link Source: show | on GitHub # File activerecord/lib/active_record/transactions.rb, This is a crucial point to understand; I saw several transaction blocks that would never rollback because the containing code could not throw an exception.
The problem seems disappeared. If your application writes to multiple databases at once you will need to wrap the method inside a nested transaction. In Rails, rollbacks are only triggered by an exception.
user.email = auth["info"]["email"] unless auth["info"].blank? Not the answer you're looking for? I assumed this is just because of a misunderstanding of how transactions work within Rails, and so I thought iʼd take some time and give an overview of the common errors You signed out in another tab or window.
Expression evaluates numerically inside of Plot but not otherwise How do pilots identify the taxi path to the runway? "Carrie has arrived at the airport for two hours." - Is this Transactions can be deferred, immediate, or exclusive. As a rule, transactions are only needed when changes to multiple records must succeed as a single unit. http://stackoverflow.com/questions/11286386/sqlite3busyexception-error By design magic finders will return nil when no record is returned.
Here is a few ones with context: ======================== ActiveRecord::StatementInvalid (SQLite3::SQLException: cannot start a transaction within a transaction: begin transaction): /usr/lib/ruby/gems/1.8/gems/passenger-4.0.5/lib/phusion_passenger/rack/thread_handler_extension.rb:77:in `process_request' /usr/lib/ruby/gems/1.8/gems/passenger-4.0.5/lib/phusion_passenger/request_handler/thread_handler.rb:140:in `accept_and_process_next_request' /usr/lib/ruby/gems/1.8/gems/passenger-4.0.5/lib/phusion_passenger/request_handler/thread_handler.rb:108:in `main_loop' /usr/lib/ruby/gems/1.8/gems/passenger-4.0.5/lib/phusion_passenger/request_handler.rb:441:in `block (3 levels) in start_threads' Move to directory that was no directory Draw a hollow square of # with given width IN operator must be used with an iterable expression What's the most robust way to Product catalog Does bolting to aluminum for electrical contact have any oxidation concerns? But before saving the user it calls the add_friends method, the user dosent exsist yet therefor the error!
Different Active Record classes in a single transaction Though the transaction class method is called on some Active Record class, the objects within the transaction block need not all be instances For example, after_commit is a good spot to put in a hook to clearing a cache since clearing it from within a transaction could trigger the cache to be regenerated before You can specify that the callback should only be fired by a certain action with the :on option: after_commit :do_foo, on: :create after_commit :do_bar, on: :update after_commit :do_baz, on: :destroy after_commit this contact form I don't know what is wrong with the code, hoping someone could help.
So you can use validations to check for values that the transaction depends on or you can raise exceptions in the callbacks to rollback, including after_* callbacks. For example, if you try to update the index of a search engine in after_save the indexer won't see the updated record. Reverse a hexadecimal number in bash Web Sites: Disneyland vs Disney World in the United States What movie is this?
When transaction is finished and tries to release the savepoint it created earlier, a database error will occur because the savepoint has already been automatically released. An attempt to invoke the BEGIN command within a transaction will fail with an error, regardless of whether the transaction was started by SAVEPOINT or a prior BEGIN. I'll look into it and see if I can pinpoint a change. Again using the example from Rails source you would trigger a parent’s Rollback like this: 1 2 3 4 5 6 7 User.transaction do
Why did Borden do that to his wife in The Prestige? Transaction help the developer enforce data integrity within the application. When COMMIT fails in this way, the transaction remains active and the COMMIT can be retried later after the reader has had a chance to clear. http://sonoportal.net/cannot-start/cannot-start-converter.html Restart apache solves the problem.
Transactions created using BEGIN...COMMIT do not nest. Who is this Voyager character? Just upgraded 1.3.1 last night and got the same issue this morning. share|improve this answer edited Aug 1 '13 at 11:49 Sirko 42.7k1069106 answered Aug 1 '13 at 11:30 Sajeev Zacharias 8318 Please provide some explanation as well..
Projectiles in a world devoid of gunpowder Expression evaluates numerically inside of Plot but not otherwise more hot questions question feed lang-sql about us tour help blog chat data legal privacy user.image = auth["info"]["image"] unless auth["info"].blank? after_commit callbacks are called on every record saved or destroyed within a transaction immediately after the transaction is committed. Drawing a torso with a head (using \draw) Teenage daughter refusing to go to school What security operations provide confidentiality, integrity and authentication?
gem 'database_cleaner', github: 'bmabey/database_cleaner' share|improve this answer answered Apr 17 '13 at 9:00 mrmrf 9914 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign Just add config.use_transactional_fixtures = false when using database_cleaner. Is adding the ‘tbl’ prefix to table names really a problem? Reload to refresh your session.
UPDATE: I guess the problem is with a deprecation in cucumber-rails https://github.com/cucumber/cucumber-rails/issues/231 Full trace: Using the default profile... Forget which project, so I can't re-test =\ –Dan Jun 4 '13 at 0:40 @Dan I thought that may have happened, but I answered to keep a record for The cost of switching to electric cars? Common Anti-patterns To Avoid Using a transaction when only a single record is updated Needlessly nesting transactions Transactions that contain code, which won’t cause a rollback Use of transactions in a
asked 3 years ago viewed 3085 times active 3 years ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Get the weekly newsletter! Transactions can be started manually using the BEGIN command. Why does the size of this std::string change, when characters are changed? Be aware, though, that the objects will not have their instance data returned to their pre-transactional state.
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